PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The filter blocks many by default, including Facebook and Tumblr, but each school principal can opt to lift the social-media ban at their school if they wish to do so.
http://www.w3.org/ns/prov#wasQuotedFrom
  • matthewalberto.com